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UkoKoshka [18]
3 years ago
13

4.63 ​clark's country pet resort is fencing a new play area for dogs. the manager has purchased 130 yd of fence to enclose a rec

tangular pen. the area of the pen must be 1050 ydsquared. what are the dimensions of the​ pen?
Mathematics
1 answer:
lubasha [3.4K]3 years ago
5 0
Let W and L be width and length of the rectangular pen respectively.

Therefore,
Circumference, C = 2W+2L= 130 yd
Area, A = LW = 1050 yd^2=> L = 1050/W

Using the circumference expression and substituting for L;
130 = 2W + 2(1050/W) = 2W+2100/W
130*W = 2W*W + 2100
130W = 2W^2 +2100
2W^2-130W+2100 = 0

Solving for W;
W= [-(-130)+/- Sqrt ((-130)^2-4(2)(2100)]/2*2 = 32.5+/- 2.5
W = 30 or 35 yd

When W = 30, L = 1050/30 = 35
When W = 35, L = 1050/35 = 30

Therefore, W = 30 yd and L = 35 yd.
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